/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.extensions.euphoria.core.util;



import com.bff.gaia.unified.sdk.extensions.euphoria.core.annotation.audience.Audience;



import java.lang.reflect.Constructor;



/**

 * Util class that helps instantiations of objects throwing {@link RuntimeException}. For core

 * purposes only. Should not be used in client code.

 */

@Audience(Audience.Type.EXECUTOR)

public class InstanceUtils {



  public static <T> T create(Class<T> cls) {

    try {

      Constructor<T> constr = cls.getDeclaredConstructor();

      constr.setAccessible(true);

      return constr.newInstance();

    } catch (Exception e) {

      throw new IllegalStateException(e);

    }

  }



  public static <T> T create(String className, Class<T> superType) {

    return create(forName(className, superType));

  }



  @SuppressWarnings("unchecked")

  public static <T> Class<? extends T> forName(String className, Class<T> superType) {

    try {

      Class<?> cls = Thread.currentThread().getContextClassLoader().loadClass(className);

      if (superType.isAssignableFrom(cls)) {

        return (Class<? extends T>) cls;

      } else {

        throw new IllegalStateException(className + " is not " + superType);

      }

    } catch (ClassNotFoundException e) {

      throw new IllegalStateException(e);

    }

  }

}